/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:34:27,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:34:27,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:34:27,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 00:34:27,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:34:27,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:34:27,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:34:27,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:34:27,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:34:27,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:34:27,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:34:27,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:34:27,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:34:27,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:34:27,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:34:27,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:34:27,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:34:27,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:34:27,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:34:27,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:34:27,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:34:27,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:34:27,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:34:27,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:34:27,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:34:27,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:34:27,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:34:27,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:34:27,628 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:34:27,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:34:27,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:34:27,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:34:27,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:34:27,629 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:34:27,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:34:27,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:34:27,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:34:27,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:34:27,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:34:27,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:34:27,631 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:34:28,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:34:28,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:34:28,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:34:28,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:34:28,072 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:34:28,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-10-24 00:34:28,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe514e8e/c32f5d6a44c94b4f9d87d72f43b27200/FLAG483e53699 [2020-10-24 00:34:28,667 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:34:28,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-10-24 00:34:28,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe514e8e/c32f5d6a44c94b4f9d87d72f43b27200/FLAG483e53699 [2020-10-24 00:34:29,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe514e8e/c32f5d6a44c94b4f9d87d72f43b27200 [2020-10-24 00:34:29,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:34:29,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:34:29,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:34:29,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:34:29,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:34:29,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:34:29" (1/1) ... [2020-10-24 00:34:29,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0cea29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:29, skipping insertion in model container [2020-10-24 00:34:29,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:34:29" (1/1) ... [2020-10-24 00:34:29,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:34:29,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:34:29,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:34:29,405 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:34:29,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:34:29,494 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:34:29,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:29 WrapperNode [2020-10-24 00:34:29,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:34:29,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:34:29,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:34:29,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:34:29,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:29" (1/1) ... [2020-10-24 00:34:29,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:29" (1/1) ... [2020-10-24 00:34:29,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:29" (1/1) ... [2020-10-24 00:34:29,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:29" (1/1) ... [2020-10-24 00:34:29,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:29" (1/1) ... [2020-10-24 00:34:29,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:29" (1/1) ... [2020-10-24 00:34:29,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:29" (1/1) ... [2020-10-24 00:34:29,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:34:29,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:34:29,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:34:29,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:34:29,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:34:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:34:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:34:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:34:29,667 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2020-10-24 00:34:29,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-24 00:34:29,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:34:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:34:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:34:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:34:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:34:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2020-10-24 00:34:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 00:34:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:34:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:34:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:34:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 00:34:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-24 00:34:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:34:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:34:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:34:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:34:30,677 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:34:30,679 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-24 00:34:30,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:34:30 BoogieIcfgContainer [2020-10-24 00:34:30,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:34:30,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:34:30,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:34:30,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:34:30,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:34:29" (1/3) ... [2020-10-24 00:34:30,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de1cf22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:34:30, skipping insertion in model container [2020-10-24 00:34:30,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:29" (2/3) ... [2020-10-24 00:34:30,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de1cf22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:34:30, skipping insertion in model container [2020-10-24 00:34:30,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:34:30" (3/3) ... [2020-10-24 00:34:30,693 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-10-24 00:34:30,707 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:34:30,712 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:34:30,726 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:34:30,763 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:34:30,763 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:34:30,763 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:34:30,763 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:34:30,764 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:34:30,764 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:34:30,764 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:34:30,764 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:34:30,791 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-10-24 00:34:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-24 00:34:30,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:34:30,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:34:30,812 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:34:30,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:34:30,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2097673152, now seen corresponding path program 1 times [2020-10-24 00:34:30,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:34:30,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736157606] [2020-10-24 00:34:30,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:34:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:31,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:34:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-24 00:34:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:31,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 00:34:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:31,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:34:31,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736157606] [2020-10-24 00:34:31,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:34:31,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:34:31,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340780615] [2020-10-24 00:34:31,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:34:31,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:34:31,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:34:31,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:34:31,210 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-10-24 00:34:31,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:34:31,954 INFO L93 Difference]: Finished difference Result 258 states and 297 transitions. [2020-10-24 00:34:31,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:34:31,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-24 00:34:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:34:31,968 INFO L225 Difference]: With dead ends: 258 [2020-10-24 00:34:31,968 INFO L226 Difference]: Without dead ends: 126 [2020-10-24 00:34:31,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 00:34:31,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-24 00:34:32,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-24 00:34:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-24 00:34:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2020-10-24 00:34:32,033 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 47 [2020-10-24 00:34:32,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:34:32,033 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 130 transitions. [2020-10-24 00:34:32,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:34:32,034 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 130 transitions. [2020-10-24 00:34:32,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-24 00:34:32,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:34:32,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:34:32,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:34:32,038 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:34:32,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:34:32,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1976309040, now seen corresponding path program 1 times [2020-10-24 00:34:32,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:34:32,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218209933] [2020-10-24 00:34:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:34:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:32,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:34:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:32,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-24 00:34:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:32,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-24 00:34:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:34:32,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218209933] [2020-10-24 00:34:32,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:34:32,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 00:34:32,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102929676] [2020-10-24 00:34:32,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 00:34:32,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:34:32,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 00:34:32,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-24 00:34:32,269 INFO L87 Difference]: Start difference. First operand 126 states and 130 transitions. Second operand 5 states. [2020-10-24 00:34:32,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:34:32,872 INFO L93 Difference]: Finished difference Result 134 states and 137 transitions. [2020-10-24 00:34:32,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 00:34:32,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-24 00:34:32,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:34:32,876 INFO L225 Difference]: With dead ends: 134 [2020-10-24 00:34:32,876 INFO L226 Difference]: Without dead ends: 126 [2020-10-24 00:34:32,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 00:34:32,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-24 00:34:32,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-24 00:34:32,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-24 00:34:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2020-10-24 00:34:32,896 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 63 [2020-10-24 00:34:32,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:34:32,898 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2020-10-24 00:34:32,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 00:34:32,898 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2020-10-24 00:34:32,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-24 00:34:32,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:34:32,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:34:32,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:34:32,902 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:34:32,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:34:32,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1295981791, now seen corresponding path program 1 times [2020-10-24 00:34:32,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:34:32,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807265967] [2020-10-24 00:34:32,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:34:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:34:32,954 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:34:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:34:32,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:34:33,055 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 00:34:33,056 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 00:34:33,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 00:34:33,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:34:33 BoogieIcfgContainer [2020-10-24 00:34:33,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:34:33,150 INFO L168 Benchmark]: Toolchain (without parser) took 3994.60 ms. Allocated memory was 152.0 MB in the beginning and 183.5 MB in the end (delta: 31.5 MB). Free memory was 127.1 MB in the beginning and 147.4 MB in the end (delta: -20.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:33,151 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:34:33,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.07 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 115.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:33,153 INFO L168 Benchmark]: Boogie Preprocessor took 74.59 ms. Allocated memory is still 152.0 MB. Free memory was 115.4 MB in the beginning and 113.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:33,154 INFO L168 Benchmark]: RCFGBuilder took 1109.47 ms. Allocated memory is still 152.0 MB. Free memory was 113.3 MB in the beginning and 117.3 MB in the end (delta: -4.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:33,155 INFO L168 Benchmark]: TraceAbstraction took 2462.30 ms. Allocated memory was 152.0 MB in the beginning and 183.5 MB in the end (delta: 31.5 MB). Free memory was 116.8 MB in the beginning and 147.4 MB in the end (delta: -30.5 MB). Peak memory consumption was 1.4 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:33,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.07 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 115.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.59 ms. Allocated memory is still 152.0 MB. Free memory was 115.4 MB in the beginning and 113.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1109.47 ms. Allocated memory is still 152.0 MB. Free memory was 113.3 MB in the beginning and 117.3 MB in the end (delta: -4.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2462.30 ms. Allocated memory was 152.0 MB in the beginning and 183.5 MB in the end (delta: 31.5 MB). Free memory was 116.8 MB in the beginning and 147.4 MB in the end (delta: -30.5 MB). Peak memory consumption was 1.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; VAL [\old(one_modf)=54, one_modf=1] [L82] float x = 0.0f / 0.0f; VAL [one_modf=1] [L83] float iptr; VAL [iptr={8:0}, one_modf=1] [L84] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=63, iptr={8:0}, one_modf=1] [L16] __int32_t i0, j0; VAL [\old(x)=63, iptr={8:0}, iptr={8:0}, one_modf=1, x=63] [L17] __uint32_t i; VAL [\old(x)=63, iptr={8:0}, iptr={8:0}, one_modf=1, x=63] [L19] ieee_float_shape_type gf_u; VAL [\old(x)=63, gf_u={9:0}, iptr={8:0}, iptr={8:0}, one_modf=1, x=63] [L20] gf_u.value = (x) VAL [\old(x)=63, gf_u={9:0}, iptr={8:0}, iptr={8:0}, one_modf=1, x=63] [L21] EXPR gf_u.word VAL [\old(x)=63, gf_u={9:0}, gf_u.word=0, iptr={8:0}, iptr={8:0}, one_modf=1, x=63] [L21] (i0) = gf_u.word VAL [(i0) = gf_u.word=61, \old(x)=63, gf_u={9:0}, gf_u.word=0, i0=0, iptr={8:0}, iptr={8:0}, one_modf=1, x=63] [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=63, i0=0, iptr={8:0}, iptr={8:0}, one_modf=1, x=63] [L24] COND TRUE j0 < 23 VAL [\old(x)=63, i0=0, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, x=63] [L25] COND TRUE j0 < 0 VAL [\old(x)=63, i0=0, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, x=63] [L27] ieee_float_shape_type sf_u; VAL [\old(x)=63, i0=0, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, sf_u={3:0}, x=63] [L28] sf_u.word = (i0 & 0x80000000) VAL [\old(x)=63, i0=0, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, sf_u={3:0}, x=63] [L29] EXPR sf_u.value VAL [\old(x)=63, i0=0, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, sf_u={3:0}, sf_u.value=52, x=63] [L29] (*iptr) = sf_u.value VAL [\old(x)=63, i0=0, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, sf_u={3:0}, sf_u.value=52, x=63] [L31] return x; VAL [\old(x)=63, \result=63, i0=0, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, x=63] [L84] RET, EXPR modf_float(x, &iptr) VAL [iptr={8:0}, modf_float(x, &iptr)=63, one_modf=1, x=63] [L84] float res = modf_float(x, &iptr); VAL [iptr={8:0}, modf_float(x, &iptr)=63, one_modf=1, res=63, x=63] [L87] EXPR \read(iptr) VAL [\read(iptr)=52, iptr={8:0}, one_modf=1, res=63, x=63] [L87] CALL, EXPR isnan_float(iptr) VAL [\old(x)=52, one_modf=1] [L75] return x != x; VAL [\old(x)=52, \result=1, one_modf=1, x=52] [L87] RET, EXPR isnan_float(iptr) VAL [\read(iptr)=52, iptr={8:0}, isnan_float(iptr)=1, one_modf=1, res=63, x=63] [L87] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=52, iptr={8:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1, res=63, x=63] [L87] CALL, EXPR isnan_float(res) VAL [\old(x)=63, one_modf=1] [L75] return x != x; VAL [\old(x)=63, \result=0, one_modf=1, x=63] [L87] RET, EXPR isnan_float(res) VAL [\read(iptr)=52, iptr={8:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=63, x=63] [L87] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=52, iptr={8:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=63, x=63] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=52, iptr={8:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=63, x=63] [L88] CALL reach_error() VAL [one_modf=1] [L3] __assert_fail("0", "float_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 142 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 265 SDtfs, 42 SDslu, 254 SDs, 0 SdLazy, 357 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 10882 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...